How reliable are glxgears statistics? My FPS increased from 650 to 1100 by using Option "EnablePageFlip" "true" in xorg.conf!!!

[VJ]

Hi,
    I used to get 650FPS with glxgears before I added this option (at the
end ofthis mail ) to my xorg.conf. Now I get 1100FPS. Is it true that this
option increased the FPS of my card? I am using "ATI Rage 128 Pro" as video
card. Is glxgears reliable for such tests?

Option "EnablePageFlip" "true"

Thanks and regards from
VJ